1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 5. GET OTSVerificationAPI → pre-computed 6-check result from server 6. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x333e4812ad878f395120239eae6fa9ced8b5166b7e3a95cd32c365b31ca9ddec. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b86dd90d-0534-4c34-85e6-7641ab8d8d24.json and https://artists.proofprofile.net/proofs/artist/b86dd90d-0534-4c34-85e6-7641ab8d8d24.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb4f9d70831239ccb4508179dde67f3e695362d813548b7d1be5997fc03b49c5. Chain 2 (Bitcoin): anchored in block 958420 (2026-07-17T13:33:01Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCACP1698131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb1b83bc20a10e8bde3f43cd65377171229503eeaa99923e166efdd71c3a1cd0. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QM24S1700676.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x054d097e0485d592aacaad7d68f38120ea3f45e3fe35b1af66da2853f3c67159. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QM24S1700677.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95b713a3511f2771ba1ef164f282d779a159e2fcb087c44e9c575d9301fb9a57. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QM24S1700679.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cffd056e401fbc11431b63d9a32f927d00fcbdc6fb1d90d22632035725911ae. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QM24S1700680.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91c552702a507430d793b56162e551c397c28376999201c130533281dc83d73c. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QM24S1700681.
Wildcard - it's different & Kivnon Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89adc9c3beb5583cef08ef4f6fd8934c6753f0b860b11736afe5a6d5c1a21d35. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QM24S1702439.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85f3346c27902be8619cba5a1aeaa37957153966f182adfc424b86544bd5a785. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QM24S1702440.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0c086c68f86f333da3ec0a5655040028a55840afaa8649a7b39ccbd7f684fa4. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QM24S1702441.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd00dde9f67b14db0a6082fdcd5a6df018abc316db900268046dbffcd9e8af389. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QM24S1702445.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f2622735242fee9ebaf9da4271599d8a413f20e66f2cd1d395067ea5cfe8e24. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QM24S1914498.
Ur Perfect I Hate It - I See Colors Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe982f225749802ded54e87bca487b2e418b16755c561c9b1e55551f5d8ebb00b. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEWO71700126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe91a8c497aad2ee10cceb31f6acff81f3edb7ecd631950372bc43c400b1545d2. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBKPL2099094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb2b10029b06fe943065532415ee85466f64797bcc8c4648ae1f141095cfc5ad. Chain 2 (Bitcoin): anchored in block 958870 (2026-07-20T14:07:33Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEWO71700177.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9905b118de5e3a18d26b605226eb3e1525f6828d3e9ac67717b2aa52f7dc9ac5. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEWO71700564.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x694a0b69ad74d1f46efea1e6529fc0473fc795acf97bd2ba0370b34563efe8d6. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USAT22005101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8715530470f1c73521e990281ae3b7199788c56a0c7df8095a9e8747d6c001d. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCADE1793377.